#!/usr/bin/with-contenv bashio
# shellcheck shell=bash
set -euo pipefail

if bashio::config.true 'USE_EXTERNAL_DB'; then
    # External DB; nothing to create here.
    exit 0
fi

DB_USER="$(bashio::config 'DB_USERNAME')"
DB_PASS="$(bashio::config 'DB_PASSWORD')"
DB_NAME="$(bashio::config 'DB_DATABASE_NAME')"

bashio::log.info "Postgres-init: waiting for local Postgres..."
until pg_isready -q -h 127.0.0.1 -p 5432 -U postgres; do
    sleep 1
done

bashio::log.info "Postgres-init: creating role/database if missing..."
# psql search_path safe quoting using dollar-quoted strings for password
psql -v ON_ERROR_STOP=1 -h 127.0.0.1 -p 5432 -U postgres <<SQL
DO \$\$
BEGIN
   IF NOT EXISTS (SELECT 1 FROM pg_roles WHERE rolname = '${DB_USER}') THEN
      EXECUTE 'CREATE ROLE ${DB_USER} LOGIN PASSWORD ''' || replace('${DB_PASS}','''','''''') || '''';
   END IF;
   IF NOT EXISTS (SELECT 1 FROM pg_database WHERE datname = '${DB_NAME}') THEN
      EXECUTE 'CREATE DATABASE ${DB_NAME} OWNER ${DB_USER}';
   END IF;
END
\$\$;
SQL

bashio::log.info "Postgres-init: done."
exit 0